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     <h1 class="fly-extend-title layui-elip"> <a>bioarea 省市区三级联动</a> <span class="layui-badge layui-bg-green layui-hide-xs">bioarea</span> </h1> 
     <div class="fly-extend-list-info"> <a href="/u/67884264/index.html" target="_blank" class="fly-extend-list-user" title="发布者"> <cite class="layui-hide-xs">奋斗**伟</cite> <img src="/images/fly/avatar/6.jpg" alt="奋斗**伟"> </a> 
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     <p>省市区三级联动改良版，拿到的是省市区的code码，可以赋值,用法自己有介绍</p> 
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    <div class="fly-extend-list-bottom"> <span class="layui-inline">更新：2020-11-25 </span> <span class="layui-inline">创建：2020-12-3 </span> 
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        js 部分
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       <pre> &lt;script src="./layui/layui.js"&gt;&lt;/script&gt;<br>    &lt;script&gt;<br>      // 组件路径<br>        layui.config({<br>            base: './js/'<br>        }).extend({<br>            bioarea: 'bioarea'<br>        });<br>    &lt;/script&gt;<br>    &lt;script&gt;<br>        layui.use(['form', 'bioarea'], function() {<br>           <br>            var form = layui.form<br>                , bioarea = layui.bioarea<br><br>            bioarea.render({<br>                elem: '#bioarea-wrap',<br>                defaultData: {<br>                    provinceCode: '110000',<br>                    cityCode: '110100',<br>                    countyCode: '110113'<br>                },<br>                form<br>            })<br>            //监听提交<br>            form.on('submit(demo1)', function(data) {<br>                layer.alert(JSON.stringify(data.field), {<br>                    title: '最终的提交信息'<br>                })<br>                return false;<br>            });<br><br><br>            //表单取值<br>            layui.$('#LAY-component-form-getval').on('click', function() {<br>                var data = form.val('example');<br>                console.log(data);<br>                alert(JSON.stringify(data));<br>            });<br><br>        });<br>    &lt;/script&gt;</pre>
       <hr>html 部分
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       <pre> &lt;form class="layui-form bio-form-box" action="" lay-filter="example"&gt;<br>        &lt;div class="layui-col-xs12"&gt;<br>            &lt;div class="layui-form-item" id="bioarea-wrap"&gt;<br>                &lt;label class="layui-form-label add-width required"&gt;所属地域&lt;/label&gt;<br>                &lt;label class="layui-form-label small-width"&gt;省&lt;/label&gt;<br>                &lt;div class="layui-input-inline"&gt;<br>                    &lt;select style="width: 100px;" class="level-1-select" lay-filter="#bioarea-wrap1level"<br>                        name="province"&gt;<br>                        &lt;option value=""&gt;请选择省&lt;/option&gt;<br>                    &lt;/select&gt;<br>                &lt;/div&gt;<br>                &lt;label class="layui-form-label small-width"&gt;市&lt;/label&gt;<br>                &lt;div class="layui-input-inline"&gt;<br>                    &lt;select class="level-2-select" lay-filter="#bioarea-wrap2level" name="city"&gt;<br>                        &lt;option value=""&gt;请选择市&lt;/option&gt;<br>                    &lt;/select&gt;<br>                &lt;/div&gt;<br>                &lt;label class="layui-form-label small-width"&gt;区&lt;/label&gt;<br>                &lt;div class="layui-input-inline"&gt;<br>                    &lt;select class="level-3-select" lay-filter="#bioarea-wrap3level" name="county"&gt;<br>                        &lt;option value=""&gt;请选择市&lt;/option&gt;<br>                    &lt;/select&gt;<br>                &lt;/div&gt;<br>            &lt;/div&gt;<br>        &lt;/div&gt;<br>        &lt;/div&gt;<br>    &lt;/form&gt;</pre> 
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